Jarring-tool for drilling wells.



' D. R. TRIPPLEHORN. JARRING TOOL FOR DRILLING WELLS. APPLICATION FILED JUNEH, I917.

Patented Apr. 22, 1919.

"cairn PATENT @FFIQF.

DAVID R. TRIPPLEHORN, OF WICHITA, KANSAS.

JARRING-TOOL FOR DRILLING WELLS.

neonate.

Application filed June 11, 1917. Serial No. 1733243.

To all whom it may concern Be it known that I, DAVID R. TRIPPLE- HORN, a citizen of the United States, residing at WVichita, in the county of Sedgwiok and State of Kansas, have invented new and useful Improvements in Jarring-Tools for Drilling Wells, Consisting of a Combined Cable-Socket and Bumper, of which the following is a specification.

My invention relates to improvements 1n jarring tools for drilling wells in which a heavy bumper is placed within a long wrought iron tube, to which is attached the cable by means of a swivel.

The objects of my improvements are to provide a drilling apparatus that will have a continuous jarring efiect on the tools when working to prevent chunks of earth, clay or other substance from lodging around them.

As is well known, when drilling with the usual tools below the surface of the ground, chunks of earth, stones, pieces of rock or other substances loosen and get wedged behind the tools and fasten them so that the tools cannot be raised with the upward pull that usually raises them, and an instrument has to be inserted to jar and loosen the material so the tools can be raised.

I attain these objects in manner as illustrated in the accompanying drawings, in which Figure 1 is a general view of the tool;

Fig. 2 is a section view of tool showing bumper inside;

Fig. 3 is a section across the tool at 33 Fig. 2;

Fig. 4 is an enlarged view of bumper;

Figs. 5 and 6, are enlarged views. of swivel.

Fig. 7 is a. section through B where it is gripped by the wrench when required.

Referring to Fig. 1, A is a long heavy iron or steel tube, the upper end of which is drawn inward to a size sufficient to allow a cable C to work loosely through the opening. The lower end of tube has threads cut on the inner side to engage the top end of head block B; which is extended upward as shown at D, Fig. 2, the lower end or" this block is bored out and threaded in the usual manner to engage the tools ordinarily used in drilling wells, etc. Inside of tube A there is a bumper E shown by dotted lines at Fig. l and on section Fig. 2, having an opening F near its upper end, more plainly shown at Fig. 4. In this opening is inserted the swivel block G which has a hole bored vertically through the small part at the upper end, and has its inner sides tapered, a section of which is shown at Fig. 6. Fig. 5 shows a View from under side. The cable is inserted through the hole at top of tube A and into the hole at upper end of swivel G, tied into a knot below and drawn up against the beveled sides of swivel.

In operation, when the lever draws up the bumper IE it will strike the upper end of tube A and draw up the head block B with tools attached thereto, and on the downward motion of the lever the bumper IE will drop on the head D of block B and drive it downward, thus there will be a continuous bumping up and down which will have a jarring eiiect on the tools and prevents any loose material to lodge and stop them from working.

What I claim as my invention and wish to secure by Letters Patent is 1. A metal bumper of less diameter than the tube in which it works, having its upper end to conform to the shape of the inner side of said tube and which has near its upper end an elongated slot cut on one side in parallel lines, the upper end of said slot being higher in the middle than at its sides; said bumper also being provided with a. vertical hole at its upper end, in combination with a swivelof such size and shape to fit in the slot of said bumper, having a hole circular in form vertically through its center and a cone shaped opening on its lower side.

2. The combinations of a long hollow metal tube having its upper end drawn inward and narrowed to form an extended neck with a hole vertically through its center; and its lower end open with means to connect it with a head block below, a solid metal head block having the upper part of less diameter than the lower with means to connect it with the tube above; the top end of said head block being tapered upward and inward and further extended in parallel lines to its upper extremity, the lower part of said head block being provided with means for its removal and its lower end with a tapered openingthreaded to receive the usual tool extensions, a metal bumper of less diameter than the tube in which it Works its upper end of shape to conform with the inner side of said tube and having an elongated slot near its upper end cut in one side in parallel lines, the upper end of said slot beinghigher in the middle than at its sides, said bumper being provided With a vertical hole at its Copies of this patent may be obtained for five cents each, by addressing the upper end, and a. swivel of such size and shape to fit in the slot of said bumper, With a hole circular in form, vertically through 10 its center and a. cone-shaped opening on lts lower side.

D. R. TRIPPLEHORN.

Commissioner of Patents,

Washington, D. G. 

